US PATENT SUBCLASS 454 / 121
.~ Condensation preventer (e.g., defroster, etc.)

Current as of: June, 1999
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454 /   HD   VENTILATION

69  DF  VEHICLE (E.G., AUTOMOBILE, ETC.) {15}
121.~ Condensation preventer (e.g., defroster, etc.) {6}
122  DF  .~.~> Air directed between double paned window
123  DF  .~.~> Air directed at window exterior
124  DF  .~.~> Side or rear window
125  DF  .~.~> Having sweeping air distributor
126  DF  .~.~> Having means for combining heated and unheated air
127  DF  .~.~> Having dashboard air distributor (e.g., for windshield, etc.)

DEFINITION

Classification: 454/121

Condensation preventer (e.g., defroster, etc.):

(under subclass 84) Subject matter comprising means for preventing water, in either solid or liquid form, which has been removed from the air, from accumulating on a surface.

(1) Note. The condensate is usually prevented from

accumulating on a window.

SEE OR SEARCH THIS CLASS, SUBCLASS:

85, for a condensation preventer specific to a locomotive cab.

93, for a condensation preventer specific to a railcar, bus, or trailer, in general, and not restricted to a locomotive cab.

198, for a condensation preventer for a window in a static structure, (e.g., building).